Measuring Context Similarity using Pearson’s correlation coefficient

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Adrian
Adrian 2013-3-11
Hi I am trying to implement this algorithm using Matlab. If anyone cares to help me as I am totally alone and in need of dire assistance!
Basically this algorithm denotes the rating given by the user u on item i in context x as ru,i,x, and formulatethe similarity weight for two different context variables, x and y for item i. It then returns the relevance of the two context values in a context dimension Ct.

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